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    Bituminous Mixtures

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    Naveen Singh
    This document discusses three types of asphalt mixtures used in construction: hot mix asphalt, warm mix asphalt, and cold mix asphalt. Hot mix asphalt is heated to 300-350 degrees Fahrenheit and widely used. Warm mix asphalt is manufactured between 200-250 degrees Fahrenheit and uses less fossil fuels while allowing for longer shipping times. Cold mix asphalt does not require heating and is primarily used for winter repairs.

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    Bituminous Mixtures

    Uploaded by

    Naveen Singh
    21 views1 page
    This document discusses three types of asphalt mixtures used in construction: hot mix asphalt, warm mix asphalt, and cold mix asphalt. Hot mix asphalt is heated to 300-350 degrees Fahrenheit and widely used. Warm mix asphalt is manufactured between 200-250 degrees Fahrenheit and uses less fossil fuels while allowing for longer shipping times. Cold mix asphalt does not require heating and is primarily used for winter repairs.

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    Transportation Engineering Pdf

    Original Title

    Bituminous Mixtures(8)

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    This document discusses three types of asphalt mixtures used in construction: hot mix asphalt, warm mix asphalt, and cold mix asphalt. Hot mix asphalt is heated to 300-350 degrees Fahrenheit and widely used. Warm mix asphalt is manufactured between 200-250 degrees Fahrenheit and uses less fossil fuels while allowing for longer shipping times. Cold mix asphalt does not require heating and is primarily used for winter repairs.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    21 views1 page

    Bituminous Mixtures

    Uploaded by

    Naveen Singh
    This document discusses three types of asphalt mixtures used in construction: hot mix asphalt, warm mix asphalt, and cold mix asphalt. Hot mix asphalt is heated to 300-350 degrees Fahrenheit and widely used. Warm mix asphalt is manufactured between 200-250 degrees Fahrenheit and uses less fossil fuels while allowing for longer shipping times. Cold mix asphalt does not require heating and is primarily used for winter repairs.

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    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 1

    Bituminous mixture

    All asphalt is a mix of coarse aggregate stone, sand, fine aggregate stone, and petroleum-based asphalt cement.
    Depending on the mixing process and the temperatures that are used, the asphalt will be considered hot mix
    asphalt, warm mix asphalt, or cold mix asphalt.
    HOT MIX ASPHALT
    Hot mix asphalt is heated and poured at temperatures ranging from 300 to 350 degrees Fahrenheit. Chances
    are, this is the asphalt that has been used on projects around your home in the past and on the streets,
    highways, and interstates around it. It is a flexible mix that is highly weather resistant and able to repel water
    (which is why it’s such a popular choice!). Hot mix asphalt is used on days that are above 40 degrees only,
    because it cools down very quickly.
    WARM MIX ASPHALT
    It is manufactured between 200-250 degrees and uses fewer fossil fuels resources in the manufacturing
    process. It is less expensive to make and use than hot mix asphalt. Warm mix asphalt is more flexible in terms
    of use, as it cools more slowly than hot mix asphalt. It can be shipped longer distances and over a greater time
    period during the year, so nighttime or winter construction projects typically utilize it.
    COLD MIX ASPHALT
    Cold mix asphalt is the most affordable option on the market, because it doesn’t need heat during the process.
    It is typically used to repair cracks over an inch wide and potholes that pop up during the winter months. It is
    not a substitute for a formal repair with hot mix or warm mix asphalt during the warmer months, as it will not
    last nearly as long.

    General classification on the basis of production

    Temperature is

     Cold mixes (0-30°C);

    • Half warm asphalt (65-100°C);

    • Warm mix asphalt (100-140°C)

    • Hot mix asphalt (above 140°C).

    The WMA has certain distinct advantages over HMA. Some of them can be
    mentioned below:
     As the temperature level is relatively low, air-pollution caused due to
    emission and fumes is less. Also, the aging of asphalt binder during the
    heating process (called as short-term aging) is controlled considerably.
     Less energy is spent while manufacturing.
     Temperature drop during mix transportation is no longer a concern. The
    construction season expands and the haul distance increases.
     Compacting effort is less so as to achieve a specified compaction level

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